Dear all, Wikidata is mentioned as an example of crowdsourced knowledge graph in this keynote presentation at Semantic Web 20 Years in Finland Jubilee, Nov 2, 2021, Aalto University, Finland. Professor Pascal Hitzler, Kansas State University, U.S.: Semantic Web: A 20-year Perspective https://www.youtube.com/watch?v=n0H5sPM7IjA Best,